Kate Hudson's son and Kurt Russell twinning in matching sunglasses on Greek holiday

The 39-year-old actress and entrepreneur, Kate Hudson, is on vacation with her family and shared a beautiful photo of her son with her step-father, Kurt Russell.

The photo shows the grandfather-and-grandson duo on a boat while wearing matching sunglasses and starring off into the distance. Hudson used a heart emoji in the description.

The family is spending some time 'off the grid' in Greece. Hudson, her boyfriend Danny Fujikawa and her sons were joined by her mother, Goldie Hawn, and brother Oliver.

She shared another cute photo of her family members splashing in the waves. Hudson used the hashtag 'Greece,' and wrote: '[sun's] out, belly out,' with a sun emoji.

Hawn also shared photos of the getaway with her 1.4 million Instagram followers and explained in the description that they're 'spending some good [off the grid] time' with the family.

Hudson is expecting her first child, a daughter, with Fujikawa, but she also has two sons from previous relationships with Chris Robinson and Matt Bellamy.

The How To Lose A Guy In 10 Days star was married Robinson from 2000 until 2006. Their son, Ryder Russel Robinson, who was born in 2004.

Hudson didn't walk down the aisle with Bellamy, the Muse lead vocalist, but dated him for four years. They are co-parenting their 7-year-old son, Bingham Hawn Bellamy.

Her third pregnancy was announced on Instagram, with a short video showing her gender reveal party. She and her partner, Danny Fujikawa, were each holding a balloon filled with pink confetti.

Hudson's followers can look forward to her upcoming film, Sister. It follows the story of a sober drug dealer and their disabled sister and was directed by Sia.

The film is currently in post-production and will be released later this year. To learn more about Hudson, follow our official Twitter page, AmoMama USA.